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Fabrication of Periodic Nanostructures Using AFM Tip-Based Nanomachining: Combining Groove and Material Article

Yanquan Geng, Yongda Yan, Jiqiang Wang, Emmanuel Brousseau, Yanwen Sun, Yazhou Sun

Engineering 2018, Volume 4, Issue 6,   Pages 787-795 doi: 10.1016/j.eng.2018.09.010

Abstract:

This paper presents an atomic force microscopy (AFM) tip-based nanomachining method to fabricate periodicThe presented experimental data show that periodic patterns with good quality can be achieved when thecharacteristic diagram of the cross-section of the measured AFM image is employed to quantitatively analyze the periodicFinally, the optical effect induced by the use of machined periodic nanostructures for surface colorization

Keywords： Atomic force microscopy     Nanomachining     Periodic nanostructure     Single-crystal copper    

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Sequential degradation-based burn-in test with multiple periodic inspections

Frontiers of Engineering Management 2021, Volume 8, Issue 4,   Pages 519-530 doi: 10.1007/s42524-021-0166-0

Abstract: accelerated lifetime test, this study proposes a sequential degradation-based burn-in model with multiple periodic

Keywords： burn-in     degradation     multiple inspections     Wiener process     partially observed Markov decision process    

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Interfacial induction and regulation for microscale crystallization process: a critical review

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 838-853 doi: 10.1007/s11705-021-2129-8

Abstract: Microscale crystallization is at the frontier of chemical engineering, material science, and biochemical research and is affected by many factors. The precise regulation and control of microscale crystal processes is still a major challenge. In the heterogeneous induced nucleation process, the chemical and micro/nanostructural characteristics of the interface play a dominant role. Ideal crystal products can be obtained by modifying the interface characteristics, which has been proven to be a promising strategy. This review illustrates the application of interface properties, including chemical characteristics (hydrophobicity and functional groups) and the morphology of micro/nanostructures (rough structure and cavities, pore shape and pore size, surface porosity, channels), in various microscale crystallization controls and process intensification. Finally, possible future research and development directions are outlined to emphasize the importance of interfacial crystallization control and regulation for crystal engineering.

Keywords： interfacial crystallization     heterogeneous nucleation     supersaturation     micro/nanostructure     process    

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Fabrication of titania thin film with composite nanostructure and its ability to photodegrade rhodamine

ZHANG Gaojie, WU Jinming, LIU Shaoguang, YAN Mi

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 44-48 doi: 10.1007/s11705-008-0001-8

Abstract: nanorods through an infiltration sol-gel procedure to form a composite titania film with an ordered nanostructure

Keywords： constant     weight     apparent photodegradation     hydrogen     nanorod    

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Investigation of nanostructure of konjac-based water absorbents with atomic force microscopy

Shengrong GENG, Ruotai LIN, Mingli CHEN, Shaoyang LIU, Yifen WANG,

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 4,   Pages 357-362 doi: 10.1007/s11705-009-0245-y

Abstract: Atomic force microscopy technology is gradually spreading to almost all aspects, including food science and technology, since it was first invented in 1986. In this study, this powerful instrument was applied to image nanostructures of three water absorbents—original konjac powder, konjac powder grafted with acrylic acid using Co γ-irradiation and regenerated grafted powder. Water absorption capacities and the rates of the three absorbents were also determined in this work. Original konjac powder could only absorb 60 times (w/w) of water, while 270 times for the grafted absorbent and 360 times for the regenerated absorbent. The initial water absorption rates in both tap and distilled water were high, but the rate decreased steeply as time elapsed. After 20min, the absorbent was close to saturated status. These physical properties were in accordance with the nanostructures of these three water absorbents.

Keywords： regenerated grafted     -irradiation     grafted     grafted absorbent     accordance    

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Laser interference fabrication of large-area functional periodic structure surface

Lei WANG, Zi-Han WANG, Yan-Hao YU, Hong-Bo SUN

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 4,   Pages 493-503 doi: 10.1007/s11465-018-0507-9

Abstract:

Functional periodic structures have attracted significant interest due to their natural capabilitiesHere, we reviewed the work on laser interference fabrication of large-area functional periodic structures

Keywords： laser interference     four-beam interference     multi-exposure of two-beam interference     additive fabrication    

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An Interdisciplinary Perspective from the Earth Scientist’s Periodic Table: Similarity and Connection Perspective

Fenglong Sun, Zhongwei Zhao

Engineering 2020, Volume 6, Issue 6,   Pages 707-715 doi: 10.1016/j.eng.2020.04.002

Abstract:

In 2003, Railsback proposed the Earth Scientist's Periodic Table, which displays a great deal

Keywords： Metallurgy     Geochemistry     Periodic table Ionic potential     Elemental affinity    

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Recent advances in SERS detection of perchlorate

Jumin Hao, Xiaoguang Meng

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 448-464 doi: 10.1007/s11705-017-1611-9

Abstract: Perchlorate has recently emerged as a widespread environmental contaminant of healthy concern. Development of novel detection methods for perchlorate with the potential for field use has been an urgent need. The investigation has shown that surface-enhanced Raman scattering (SERS) technique has great potential to become a practical analysis tool for the rapid screening and routine monitoring of perchlorate in the field, particularly when coupled with portable/handheld Raman spectrometers. In this review article, we summarize progress made in SERS analysis of perchlorate in water and other media with an emphasis on the development of SERS substrates for perchlorate detection. The potential of this technique for fast screening and field testing of perchlorate-contaminated environmental samples is discussed. The challenges and possible solutions are also addressed, aiming to provide a better understanding on the development directions in the research field.

Keywords： perchlorate     SERS     detection     substrate     modification     nanostructure    

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Nanostructure and reactivity of soot from biofuel 2,5-dimethylfuran pyrolysis with CO

Lijie ZHANG, Kaixuan YANG, Rui ZHAO, Mingfei CHEN, Yaoyao YING, Dong LIU

Frontiers in Energy 2022, Volume 16, Issue 2,   Pages 292-306 doi: 10.1007/s11708-020-0658-3

Abstract: This paper investigated the nanostructure and oxidation reactivity of soot generated from biofuel 2,5The morphology and nanostructure of soot samples were characterized by a low and a high resolution transmissionThe result further confirmed the close relationship between soot nanostructure and oxidation reactivity

Keywords： 2     5-dimethylfuran pyrolysis     soot     CO2 addition     nanostructure     reactivity    

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Recent progress on nanostructure-based broadband absorbers and their solar energy thermal utilization

Tong Zhang, Shan-Jiang Wang, Xiao-Yang Zhang, Ming Fu, Yi Yang, Wen Chen, Dan Su

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 35-48 doi: 10.1007/s11705-020-1937-6

Abstract: Nanostructure-based broadband absorbers are prominently attractive in various research fields such as

Keywords： nanostructured broadband absorbers     solar energy harvesting     thermal utilization    

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Recent progress in electrospun nanofibers and their applications in heavy metal wastewater treatment

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 3,   Pages 249-275 doi: 10.1007/s11705-022-2245-0

Abstract: Novel adsorbents with a simple preparation process and large capacity for removing highly toxic and nondegradable heavy metals from water have drawn the attention of researchers. Electrospun nanofiber membranes usually have the advantages of large specific surface areas and high porosity and allowing flexible control and easy functionalization. These membranes show remarkable application potential in the field of heavy metal wastewater treatment. In this paper, the electrospinning technologies, process types, and the structures and types of nanofibers that can be prepared are reviewed, and the relationships among process, structure and properties are discussed. On one hand, based on the different components of electrospun nanofibers, the use of organic, inorganic and organic−inorganic nanofiber membrane adsorbents in heavy metal wastewater treatment are introduced, and their advantages and future development are summarized and prospected. On the other hand, based on the microstructure and overall structure of the nanofiber membrane, the recent progresses of electrospun functional membranes for heavy metal removal are reviewed, and the advantages of different structures for applications are concluded. Overall, this study lays the foundation for future research aiming to provide more novel structured adsorbents.

Keywords： electrospinning     heavy metal     adsorption     nanostructure     wastewater    

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Tuning the catalytic selectivity in electrochemical CO

Jiafang XIE,Yuxi HUANG,Hanqing YU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 861-866 doi: 10.1007/s11783-014-0742-1

Abstract: Electrochemical conversion of CO to hydrocarbons can relieve both environmental and energy stresses. However, electrocatalysts for this reaction usually suffer from a poor product selectivity and a large overpotential. Here we report that tunable catalytic selectivity for hydrocarbon formation could be achieved on Cu nanomaterials with different morphologies. By tuning the electrochemical parameters, either Cu oxide nanowires or nanoneedles were fabricated and then electrochemically reduced to the corresponding Cu nanomaterials. The Cu nanowires preferred the formation of C H , while the Cu nanoneedles favored the production of more CH , rather than C H . Our work provides a facile synthetic strategy for preparing Cu-based nanomaterials to achieve selective CO reduction.

Keywords： electrochemical CO2 reduction     Cu oxide     nanostructure     selectivity     hydrocarbon formation    

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New results on impulsive type inertial bidirectional associativememory neural networks Research Articles

Chaouki AOUITI, Mahjouba Ben REZEG, Yang CAO

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 2,   Pages 324-339 doi: 10.1631/FITEE.1900181

Abstract: practical conditions are given to study the existence, uniqueness, and global exponential stability of anti-periodic

Keywords： Inertial neural networks     Anti-periodic solutions     Global exponential stability     Impulsive effect     Time-varying    

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Spectral emittance measurements of micro/nanostructures in energy conversion: a review

Shiquan SHAN, Chuyang CHEN, Peter G. LOUTZENHISER, Devesh RANJAN, Zhijun ZHOU, Zhuomin M. ZHANG

Frontiers in Energy 2020, Volume 14, Issue 3,   Pages 482-509 doi: 10.1007/s11708-020-0693-0

Abstract: Micro/nanostructures play a key role in tuning the radiative properties of materials and have been applied to high-temperature energy conversion systems for improved performance. Among the various radiative properties, spectral emittance is of integral importance for the design and analysis of materials that function as radiative absorbers or emitters. This paper presents an overview of the spectral emittance measurement techniques using both the direct and indirect methods. Besides, several micro/nanostructures are also introduced, and a special emphasis is placed on the emissometers developed for characterizing engineered micro/nanostructures in high-temperature applications (e.g., solar energy conversion and thermophotovoltaic devices). In addition, both experimental facilities and measured results for different materials are summarized. Furthermore, future prospects in developing instrumentation and micro/nanostructured surfaces for practical applications are also outlined. This paper provides a comprehensive source of information for the application of micro/nanostructures in high-temperature energy conversion engineering.

Keywords： concentrating solar power (CSP)     emittance measurements     high temperature     micro/nanostructure     selective    

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Recent Advances in Electrode Design Based on One-Dimensional Nanostructure Arrays for Proton Exchange Review

Shangfeng Du

Engineering 2021, Volume 7, Issue 1,   Pages 33-49 doi: 10.1016/j.eng.2020.09.014

Abstract: Advances in three-dimensional (3D) ordered electrodes based on 1D Pt-based nanostructure arrays haveincreasing electrochemical surface area (ECSA) and quantifying oxygen mass transport resistance for 1D nanostructure

Keywords： Proton exchange membrane fuel cell (PEMFC)     Electrode     One-dimensional (1D)     Oxygen reduction reaction (ORR)     Catalyst     Ordered    

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Title Author Date Type Operation

Fabrication of Periodic Nanostructures Using AFM Tip-Based Nanomachining: Combining Groove and Material

Yanquan Geng, Yongda Yan, Jiqiang Wang, Emmanuel Brousseau, Yanwen Sun, Yazhou Sun

Journal Article

Sequential degradation-based burn-in test with multiple periodic inspections

Journal Article

Interfacial induction and regulation for microscale crystallization process: a critical review

Journal Article

Fabrication of titania thin film with composite nanostructure and its ability to photodegrade rhodamine

ZHANG Gaojie, WU Jinming, LIU Shaoguang, YAN Mi

Journal Article

Investigation of nanostructure of konjac-based water absorbents with atomic force microscopy

Shengrong GENG, Ruotai LIN, Mingli CHEN, Shaoyang LIU, Yifen WANG,

Journal Article

Laser interference fabrication of large-area functional periodic structure surface

Lei WANG, Zi-Han WANG, Yan-Hao YU, Hong-Bo SUN

Journal Article

An Interdisciplinary Perspective from the Earth Scientist’s Periodic Table: Similarity and Connection

Fenglong Sun, Zhongwei Zhao

Journal Article

Recent advances in SERS detection of perchlorate

Jumin Hao, Xiaoguang Meng

Journal Article

Nanostructure and reactivity of soot from biofuel 2,5-dimethylfuran pyrolysis with CO

Lijie ZHANG, Kaixuan YANG, Rui ZHAO, Mingfei CHEN, Yaoyao YING, Dong LIU

Journal Article

Recent progress on nanostructure-based broadband absorbers and their solar energy thermal utilization

Tong Zhang, Shan-Jiang Wang, Xiao-Yang Zhang, Ming Fu, Yi Yang, Wen Chen, Dan Su

Journal Article

Recent progress in electrospun nanofibers and their applications in heavy metal wastewater treatment

Journal Article

Tuning the catalytic selectivity in electrochemical CO

Jiafang XIE,Yuxi HUANG,Hanqing YU

Journal Article

New results on impulsive type inertial bidirectional associativememory neural networks

Chaouki AOUITI, Mahjouba Ben REZEG, Yang CAO

Journal Article

Spectral emittance measurements of micro/nanostructures in energy conversion: a review

Shiquan SHAN, Chuyang CHEN, Peter G. LOUTZENHISER, Devesh RANJAN, Zhijun ZHOU, Zhuomin M. ZHANG

Journal Article

Recent Advances in Electrode Design Based on One-Dimensional Nanostructure Arrays for Proton Exchange

Shangfeng Du

Journal Article